Eidson C S, Kleven S H, Fletcher O J
Poult Sci. 1985 Nov;64(11):2081-6. doi: 10.3382/ps.0642081.
Broiler breeder pullets were vaccinated at 20 to 24 weeks of age with an inactivated, oil emulsion vaccine containing the CO8 strain of avian reovirus. The vaccination induced a high and uniform antibody response that peaked 4 to 5 months postvaccination and persisted up to 11 months postvaccination. Broiler production parameters in progeny of vaccinated breeders were compared weekly with parameters of the total broiler production. There was a consistent improvement in body weight at processing time and a reduction in total production cost in progeny of vaccinated parents. There was also a reduction of percent of parts condemned during the first part of the trial. There were no consistent differences in feed conversion or condemnation of whole carcasses. Progeny of vaccinated parents had reduced livability. This effect was interpreted to be due to the smaller egg size of young breeder flocks.
肉种鸡母鸡在20至24周龄时用含有禽呼肠孤病毒CO8株的灭活油乳剂疫苗进行免疫接种。该疫苗接种诱导了高且均匀的抗体反应，在接种后4至5个月达到峰值，并持续至接种后11个月。每周将接种疫苗的种鸡后代的肉鸡生产参数与整个肉鸡生产的参数进行比较。在加工时，接种疫苗的亲本后代的体重持续改善，总生产成本降低。在试验的第一阶段，被判不合格的部分比例也有所降低。在饲料转化率或整个胴体被判不合格方面没有一致的差异。接种疫苗的亲本后代的成活率降低。这种影响被解释为是由于年轻种鸡群的蛋尺寸较小。
